Originally Posted by TheBigNewt
If that's true you still need to pay for a txt plan, contrary to what the person at the top of the tread said. I'm confused!
If used properly then you should not need an SMS plan. When you send through teleflip.com or another gateway the return address is your email address. If the recipient replies directly to the SMS message that they have received then it should arrive on your BlackBerry as an email and use only your data package.
If, however, they send their reply to your mobile number then it will arrive on your BlackBerry as an SMS message.
Bear in mind, as well, that different carriers may transport the messages in different ways. A couple of test messages back and forth should be enough to verify exactly how the gateways function.